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TNF to BFI: distance & flight time
Toussous-le-noble (Toussus-le-Noble Airport) → Seattle (Boeing Field King County International Airport)
5,000 mi
8,046 km · 4,345 nm
10h 16m
estimated nonstop flight time
-9h
time difference · heading northwest
See live TNF→BFI fares Phone-only fares on this route — call free
Flight time details
5,000 miles nonstop takes roughly 10h 16m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9-hour time set-back when reading arrival times on your ticket.
The two airports
- TNF — Toussus-le-Noble Airport · Toussous-le-noble, France
- BFI — Boeing Field King County International Airport · Seattle, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near TNF
- CDG · Charles de Gaulle International Airport27 mi away
- VIY · Villacoublay-Vélizy (BA 107) Air Base4 mi away
- ORY · Paris-Orly Airport13 mi away
- LBG · Paris-Le Bourget Airport21 mi away
Near BFI
- SEA · Seattle Tacoma International Airport6 mi away
- RNT · Renton Municipal Airport5 mi away
- PWT · Bremerton National Airport22 mi away
- TIW · Tacoma Narrows Airport22 mi away
Frequently asked questions
How far is TNF from BFI?
The flight distance from Toussous-le-noble (TNF) to Seattle (BFI) is 5,000 miles (8,046 km, 4,345 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from TNF to BFI?
A nonstop flight takes about 10h 16m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Toussous-le-noble and Seattle?
Seattle is 9 hours behind Toussous-le-noble.
What is the cheapest way to fly from TNF to BFI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on TNF–BFI that never appear on search engines, with no booking fees.